文献类型：期刊文献

英文题名：Morphology, ecology, and contaminant removal efficiency of eight wetland plants with differing root systems

作者：Cheng, Xiu-Yun[1,2];Chen, Wen-Yin[1,2];Gu, Bin-He[1,2,3,4];Liu, Xu-Cheng[1,2];Chen, Fang[1,2];Chen, Zhang-He[1,2];Zhou, Xian-Ye[1,2];Li, Yu-Xiang[1,2];Huang, Hua[5];Chen, Yun-Jin[5]

机构：[1]S China Normal Univ, Coll Life Sci, Key Lab Ecol & Environm Sci Guangdong Higher Educ, Guangzhou 510631, Guangdong, Peoples R China;[2]S China Normal Univ, Coll Life Sci, Guangdong Prov Key Lab Biotechnol Plant Dev, Guangzhou 510631, Guangdong, Peoples R China;[3]Univ S Florida, Coll Arts & Sci, St Petersburg, FL 33701 USA;[4]Guangdong Ocean Univ, Fishery Coll, Zhanjiang, Guandong, Peoples R China;[5]Liede Wasterwater Treatment Plant, Guangzhou 510655, Guangdong, Peoples R China

年份：2009

卷号：623

期号：1

起止页码：77

外文期刊名：HYDROBIOLOGIA

收录：SCI-EXPANDED(收录号：WOS:000263076300005)、、EI(收录号：20090711905304)、Scopus(收录号：2-s2.0-59449110918)、WOS

基金：The project was supported by the National Natural Science Foundation of China ( No. 30470346) and the Natural Science Foundation of Guangdong Province ( Nos. 021082, 06025056). We recognize Dr. Thomas Dreschel for his editorial improvements of this manuscript.

语种：英文

外文关键词：Constructed wetland; Contaminant removal; Fibrous-root plants; Rhizomatic-root plants; Root biomass and distribution

外文摘要：The objective of this study was to test the hypothesis that fibrous-root plants and rhizomatic-root plants are characterized by different root morphologies, root growth and distribution, and contaminant removal capabilities. Four fibrous-root and four rhizomatic-root wetland plants were studied in mono-cultured microcosms which received wastewater. Fibrous-root plants had significantly greater (P < 0.05) small-size root (diameter a parts per thousand currency sign 1 mm) biomass and a larger (P < 0.05) root surface area per plant than the rhizomatic-root plants and exhibited accelerated growth in both shoots and roots compared to the rhizomatic-root plants. Fibrous-root plants developed the majority of their root biomass increment within a shallower gravel medium than the rhizomatic-root plants. All plants demonstrated fast root biomass growth from July to September. The wetland microcosms planted with fibrous-root plants showed significantly higher (P < 0.05) ammonium-nitrogen (NH4-N) and nitrate-nitrogen (NO3-N) removal rates from July to December than those planted with the rhizomatic-root plants. These results suggest that root characteristics of wetland plants, which are related to their shoot and root growth, root distribution, and decontamination ability, can be used in the selection of wetland plants with a higher contaminant removal capacity and in the construction of a multi-species wetland plant community.